Attachment for steam-shovels.



E. S. BERNEY.

ATTACHMENT FOR STEAM SHOVELS.

APPLICATION FILED MAR. a, 1911 1,008,776, I Patented Nov. 14, 1911.

2 SHEETS-SHEET 1.

E. S. BERNBY.

ATTACHMENT FOB STEAM SHOVELS APPLICATION FILED MAB. s, 1911.

1,008,776. Y Patented Nov. 14, 1911.

2 SHEETS-SHEET 2.

ammo a E772 es Z6. Ber/2g GEM TIT E FFICE.

ERNEST S. IBERNEY, OF LAKEVIEW, OREGON.

ATTACHMENT FOR STF JAM-SHOVELS.

Specification of Letters Patent.

Patented Nov. 14, '1911.

Application filed March 8, 1911. Serial No. 612,995.

To all whom it may concern:

Be it known that I, ERNEST S. BERNEY, a citizen of the United States, residing at Lakeview, in the county of Lake and State of Oregon, have invented new and useful Improvements in Attachments for Steam- Shovels, of which the following is a speci-' fication.

This invention relates to improvements in steam shovels, and is primarily directed to a lifting and sustaining means secured to the opposite sides of the shovel carriage and providing means whereby the said carriage may belifted and the tracks therefor pulled or drawn, by mechanism attached to the shovel, so that the said carriage may be advanced during the progress of excavation.

"With the above and other objects in view, which will appear as the description progresses, the invention resides in the novel construction and arrangement of parts hereinafter fully described and claimed.

In the accompanying drawings there has been illustrated a simple and approved type of the device, and in which drawings Figure 1 is aside elevation of a steam shovel or excavator showing the lifting and sustaining elements thereon. Fig. 2 is an enlarged view of one of the lifting and sustaining devices, parts of the same being shown in section. Fig. 3 is a vertical transverse sectional view of the same.

In the accompanying drawings the numeral 1 designates the carriage or car of the excavator. The carriage 1 is provided with the usual flanged wheels 2 which are mounted upon suitable axles and are adapted to engage movable rails 3. The car or carriage 2 is provided with, the usual excavating bucket or shovel and is also formed with the usual means for operating the said bucket or shovel. The shovel, in the. present instance, is vertically adjustable as well as hingedly connected with a suitable support. The details of the shovel and its opcrating mechanism are well known in the art and do not enter into the subject matter of the present application.

The numerals 4 indicate the improved raising and sustaining elements for the car 1. These elements are positioned adjacent the front and rear ends of the car and upon the opposite sides thereof, so that each of the members will securely engage the earth adjacent the ties for the rails 3. The ele ments at each comprise essentially a shoe 5. This shoe 5 comprises a longitudinal member having its under face formed with a plurality of spaced depressions providing teeth 6. These teeth are arranged transversely of the said shoe 5 so as to effectively bite into the ground to assure a firm bearing for the shoe.

The numeral 7 indicates a yoked member which is connected with the shoe 5. The said yoked member has its under face rounded as at 8, and the said rounded portion is adapted to contact with the upper face of the shoe 5 and at the central portion thereof. The yoke 7 is preferably constructed of a channel iron and the lower or rounded portion of the said yoke is provided with suitable eye bolts 9, the same being spaced an equal distance from the center of the said lower .face. These spaced eye bolts are adapted for the reception of links 10 and the links 10 engage eyes 11 which are formed upon the upper face of the shoe 5 adjacent the ends thereof. The numeral 12 designates a frame which is supported upon one of the longitudinally extending eye beams 13 provided upon the sides of the car.

The frame 12 is essentially of a substantially rectangular formation, comprising vertical members 14 and upper and lower connecting members 15 and 16. The vertical members adjacent their opposite ends are provided with angular brace rods or members 17, the same having their offset ends secured to the opposite faces of the eye beam 13. The frame 12 is adapted to serve as a guide for the vertically extending arms 18 of the yoke 7. The vertical members 14 of the frame are provided with a plurality of anti-frictional rollers 19,the same bearing against the outer faces of the vertical arms 18 of the yoke so that the said yoke may be raised or lowered upon the frame with a minimum amount of friction.

Longitudinally extending upon the outer face of the frame 12 is a pair of angle irons 20. Each of these angle irons is provided with guide rollers 21 and 22, the same being trunnioned between the said angle irons and being adapted to engage the inner faces of the vertical arms of the yoke. Secured to the horizontally extending flanges of the angle irons 20' is a boxing 23, the latter having its upper extremity flanged and the said flange being formed with openings adapted to aline with similar openings in the horizontal members of the angle irons 20, the said openings being adapted for the reception of removable retaining elements 24. The boxing 23 is centrally formed with an opening through which is adapted to extend a threaded shaft 25. The lower portion of the shaft 25 is provided with a cap 26, the same being securely fastened thereto in any desired manner, and the lower extremity of the said cap is rotatably connected with the plate 27, the latter being securely connected with the yoke 8. The box ing 23 has its inner face cylindrical and conuected with the top wall of the said inner portion of the boxing is a raceway 28. This raceway is adapted for the reception of suitable steel balls 29, the same being retained in position through the medium of a flanged plate 30, the same having its horizontal face formed with a suitable raceway for the reception of the balls and the flanged portion of the said member '30 surrounding the threaded shaft 25.

The numeral 31 designates a worm gear, the latter being keyed or otherwise secured to a threaded collar 32. This collar 32 has its upper extremity formed with a flange 33, the same being of a circular formation and adapted to be connected or to lie tightly against the lower face of the member 30. The flange 33 is secured within the boxing through the medium of a removable closure 34, the latter being connected with the under face of the boxing in any desired or preferred manner. Adapted to mesh with the worm gear 31 is a similar worm gear 35, the latter being mounted upon a transversely extending shaft 36. The shaft 36 is connected, in any desired manner, with a suitable drive wheel attached to the engine which is positioned within the center of the car.

When it is desired to raise the car above the tracks, so as to allow the tracks to be pulled forward by the bucket operating mechanism, as indicated in Fig. 1 of the drawings, power is applied to the transversely extending shafts 36, which are two in number, and which connect each of the opposite lifting and supporting devices, so as to rotate the worms 38. This, of course, will revolve the Worm 31 and cause the shoes 6 to be firmly embedded Within the ground, while the car as well as the frame travels upwardly upon the vertical arms of the yoke. When the car is in its raised position the rails 3 have their extremities connected through the medium of suitable flexible mechanism, designated by the numeral 39 connected with the point of the shovel portion and the shovel operating mechanism is brought into play, causing the said shovel to be rotated upon its pivot in a forward direction and consequently drawing the rails 3 forward. When the rails have been brought forward a sufficient distance, the operating mechanism within the car is re versed so as to raise the yoke and shoe to allow the driving power within the car to force the same forwardly upon the rails 3. When the car is in a position for further excavation, the latter is again raised so that its wheels 2 are free of the rails 3' and the shoes 5 as well as the yokes 8 will effectively sustain the car against the vibrations caused by the working of the shovel portions.

F mm the above description, taken'in connection with the accompanying drawings, the advantages of the device will be apparent to those skilled in the art to which the invention appertains. It is to be understood, however, that while I have illustrated and described the preferred embodiment of the improvement, minor details of construction, within the scope of the following claims may be resorted to if desired.

Having thus fully described the invention, what I claim as new, is

1. The combination with a car body, of a vertically movable yoke upon the car body, said yoke having its lower or connected por tion rounded, a shoe having its under face provided with teeth adapted to be centrally contacted by the rounded portion of the yoke, flexible connections between the ends of the shoe and the yoke, and means for raising or lowering the yoke.

2. The combination with a car,'of a frame mounted upon the car, a yoke having its lower end rounded and its vertical arms mounted within the frame, a longitudinally extending shoe centrally contacted by the rounded portion of the yoke, said shoe having its under face formed with teeth, the said shoe having its upper face adjacent its ends loosely connected with the yoke, and means for raising and lowering the yoke.

3. The combination with a car, a rectangular frame connected with the car, a yoke mounted for vertical movement within the frame, angle irons connecting the sides of the frame, bearings for the arms of the yoke between the angle irons and the vertical members of the frame, a vertically disposed threaded shaft, a centrally arranged boxing carried by the angle iron, anti-frictional bearings within the boxing, a worm gear having a collar formed with threads engaging the threads of the shafts, said collar having its upper portion provided with a flange adapted to be engaged within the boxing, a cap for the open face of the boxing connected with the yoke, and means for r0- adapted to surround the collar to retain its tating the worm gear. 10 flange within the boxing, the lower connect- In testimony whereof I affix my signature ing portion of the yoke being centrally proin presence of two witnesses. i vided with a plate, a cap upon the lower end ERNEST S. BERNEY.

of the shaft loosely connected with said plate, Witnesses: a shoe contacting the central portion of the L. F. CONN, yoke, the ends of the said shoe being loosely W. E. BERNEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, D. G. 

